3110-00-618-1388 BEARING,BALL,ANNULAR Index 1240-00-618-1391 HOLDER,OPTICAL ELEMENT

National Stock Number:
1240-00-618-1390

Federal Supply Class:
1240

National Item Identification Number:
006181390

Description:
CELL,OPTICAL ELEMENT

Detail:
A CYLINDRICAL ITEM SPECIFICALLY DESIGNED TO HOLD A LENS, RETICLE, OR WINDOW IN AN OPTICAL SYSTEM. INCLUDES ECCENTRIC CELLS AND/OR RINGS DESIGNED TO BE ROTATED WITHIN THE INSTRUMENT TO SHIFT AN OPTICAL ELEMENT TO A PRESCRIBED POSITION.


Manufacturer Information:
618139019200US ARMY ARDEC RDECOM


Techincal Specification:
ECCENTRIC CONSTRUCTIONNOT PROVIDED
DRIVE TYPESLOTTED FACE
ELEMENT SECURING METHODTHREADED RING
CHAMFER LOCATIONOPPOSITE DRIVE END
CHAMFER SIZE0.010 IN. BY 45 DEG
FSC APPLICATION DATAPERISCOPE,BATTERY COMMAND
OVERALL DIAMETER2.438 INCHES NOMINAL
OVERALL LENGTH0.770 INCHES MINIMUM AND 0.780 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-700/6, T4 OR T6,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY 6061
SCREW THREAD SERIES DESIGNATORUNS
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A AND 2B
THREAD LENGTH0.156 INCHES AND 0.172 INCHES
THREAD LOCATIONEXTERNAL AND INTERNAL
THREAD PITCH DIAMETERS+2.4042 TO 2.4090 INCHES AND +2.2922 TO 2.2978 INCHES
THREAD SIZE2-7/16 IN.-24 AND 2-5/16 IN.-32


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